Convergent Validity of Leading Assessment Tools
How well do popular psychometric assessments align? A rigorous, data-driven analysis comparing REACH Profile against Schutte Emotional Intelligence, Fisher Temperament Inventory, DiSC, and CliftonStrengths — based on research involving over 33,000 participants from 12 countries.
What is Convergent Validity?
Convergent validity measures the degree to which two assessments that theoretically should be related are, in fact, related. When a leadership assessment correlates positively with a validated emotional intelligence measure, it provides evidence that the tool genuinely measures the constructs it claims to. High convergent validity means the tool isn't measuring something random — it's aligned with the broader psychological science.
* p < .05 ** p < .01 — Statistical significance indicators used throughout this analysis.
Headline Findings
REACH Quotient shows moderate-to-strong convergent validity with the validated Schutte Emotional Intelligence scale.
REACH Achieving Style strongly correlates with the Dopamine neurochemical expression measured by Fisher Temperament Inventory.
REACH Achieving Style shows meaningful alignment with DiSC's Dominance construct, confirming convergent measurement.
REACH Quotient aligns with the Influencing domain — notable given RQ measures capacity for diverse influence styles.
Tool-by-Tool Comparison Overview
Schutte Emotional Intelligence Test
33-item self-report EI measure based on Salovey & Mayer (1990) model including appraisal, recognition, and utilisation.
- RQ significantly correlated with SSEIT (r = .48**), confirming REACH measures EI-related constructs
- Counseling cluster showed strongest alignment (r = .55**) — consistent with empathy-based EI
- Consideration dimension strongly linked (r = .52**), validating relational construct
- Driving cluster less correlated (r = .32**) — appropriately discriminant for task-oriented skills
Fisher Temperament Inventory
56-item neurochemical expression measure of Dopamine, Serotonin, Testosterone, and Estrogen/Oxytocin systems.
- Achieving Style strongly linked to Dopamine (r = .61**) and Testosterone (r = .40**)
- Relating Style positively associated with Estrogen/Oxytocin (r = .34**) — neurochemical basis for empathy
- Consideration × Estrogen/Oxytocin (r = .43**) provides biological underpinning for relational styles
- Profile preferences map cleanly to dominant neurochemical systems
DiSC Typology
Four-factor personality framework measuring Dominance, Influence, Steadiness, and Conscientiousness.
- Achieving Style and Dominance (r = .48**) — strong convergent evidence for achievement-oriented constructs
- Assertiveness × Dominance (r = .52**) — highest single-dimension alignment between the two tools
- Relating Style × Influence (r = .23**) and Relating Style × Dominance (r = −.22**) — expected divergence
- DiSC showed no significant correlation with RQ — expected, as DiSC lacks skill/EI measurement
CliftonStrengths (Gallup)
Talent theme assessment across 34 strengths clustered into Executing, Influencing, Relationship Building, and Strategic Thinking domains.
- RQ × Influencing domain (r = .23*) — confirms RQ captures influence capacity beyond style
- Deliberative (r = −.57**) and Discipline (r = −.43**) inversely correlate with Relating Style — appropriate discriminant
- Communication × Relating Style (r = .50**) — strong convergence on interpersonal constructs
- Woo × Relating Style (r = .52**) — validates social orientation measurement
Detailed Correlation Data
Complete correlation matrices from the technical validation research. Cells are color-coded by effect size.
REACH Skill-based Characteristics × Schutte Emotional Intelligence
Convergent validity between REACH Quotient and validated EI measure
| Skill-based Characteristic | SSEIT Correlation |
|---|---|
| REACH Quotient (RQ) | 0.48** |
| Counseling Cluster | |
| Counseling Characteristics Cluster | 0.55** |
| Assimilating Team Members | 0.38** |
| Cultivating Team Spirit | 0.52** |
| Identifying Personal Needs | 0.50** |
| Recognizing Others' Efforts | 0.56** |
| Coaching Cluster | |
| Coaching Characteristics Cluster | 0.50** |
| Building Rapport | 0.55** |
| Easing Tensions During Conflict | 0.34** |
| Finding Opportunities For Synergy | 0.32** |
| Rallying Others Around A Cause | 0.43** |
| Driving Cluster | |
| Driving Characteristics Cluster | 0.32** |
| Establishing Clear Expectations | 0.27* |
| Evaluating Individual Performance | 0.26* |
| Exercising Control Over Processes | 0.21 |
| Guiding Team During Change | 0.37** |
| Advising Cluster | |
| Advising Characteristics Cluster | 0.29* |
| Addressing Quality Concerns | 0.29* |
| Aligning Resources With Needs | 0.19 |
| Designing Team Structure/Function | 0.17 |
| Integrating Diverse Perspectives | 0.28* |
REACH Style-based Characteristics × Schutte Emotional Intelligence
| Style-based Characteristic | SSEIT Correlation |
|---|---|
| Relating Style | 0.46** |
| Relating Style Dimensions | |
| Affiliation | 0.25* |
| Consideration | 0.52** |
| Openness | 0.30* |
| Status Motivation | -0.05 |
| Self-protection | 0.28* |
| Achieving Style | 0.17 |
| Achieving Style Dimensions | |
| Intensity | 0.05 |
| Assertiveness | 0.26* |
| Risk Tolerance | 0.07 |
| Adaptability | 0.05 |
| Decision-making | 0.24* |
REACH Skill-based Characteristics × Fisher Temperament Inventory
Convergent validity with neurochemical expression systems
| Skill-based Characteristic | Dopamine | Serotonin | Testosterone | Estrogen/Oxytocin |
|---|---|---|---|---|
| REACH Quotient (RQ) | 0.33** | 0.09 | 0.20** | 0.07 |
| Counseling Cluster | ||||
| Counseling Characteristics Cluster | 0.31** | 0.03 | -0.04 | 0.27** |
| Assimilating Team Members | 0.26** | 0.07 | 0.04 | 0.14* |
| Cultivating Team Spirit | 0.32** | 0.00 | -0.01 | 0.17** |
| Identifying Personal Needs | 0.23** | -0.06 | -0.11* | 0.28** |
| Recognizing Others' Efforts | 0.23** | 0.08 | -0.05 | 0.29** |
| Coaching Cluster | ||||
| Coaching Characteristics Cluster | 0.34** | 0.03 | 0.06 | 0.14* |
| Building Rapport | 0.29** | 0.01 | -0.04 | 0.12* |
| Easing Tensions During Conflict | 0.22** | 0.05 | 0.09 | 0.09 |
| Finding Opportunities For Synergy | 0.21** | 0.01 | 0.15** | 0.04 |
| Rallying Others Around A Cause | 0.38** | 0.04 | 0.01 | 0.20** |
| Driving Cluster | ||||
| Driving Characteristics Cluster | 0.24** | 0.12* | 0.29** | -0.08 |
| Establishing Clear Expectations | 0.21** | 0.14* | 0.18** | -0.01 |
| Evaluating Individual Performance | 0.11* | 0.13* | 0.20** | -0.04 |
| Exercising Control Over Processes | 0.17** | 0.14* | 0.31** | -0.10 |
| Guiding Team During Change | 0.29** | 0.00 | 0.25** | -0.10 |
| Advising Cluster | ||||
| Advising Characteristics Cluster | 0.22** | 0.12* | 0.36** | -0.09 |
| Addressing Quality Concerns | 0.19** | 0.11* | 0.27** | -0.12* |
| Aligning Resources With Needs | 0.17** | 0.11* | 0.36** | -0.16** |
| Designing Team Structure/Function | 0.19** | 0.13* | 0.29** | -0.04 |
| Integrating Diverse Perspectives | 0.15** | 0.02 | 0.23** | 0.03 |
REACH Style-based Characteristics × Fisher Temperament Inventory
| Style-based Characteristic | Dopamine | Serotonin | Testosterone | Estrogen/Oxytocin |
|---|---|---|---|---|
| Relating Style | 0.20** | 0.01 | -0.22** | 0.34** |
| Relating Style Dimensions | ||||
| Affiliation | 0.12* | -0.08 | -0.05 | -0.02 |
| Consideration | 0.16** | 0.03 | -0.23** | 0.43** |
| Openness | 0.14* | -0.02 | -0.16** | 0.27** |
| Status Motivation | -0.16** | -0.04 | -0.04 | -0.18** |
| Self-protection | 0.02 | -0.13* | -0.17** | -0.16** |
| Achieving Style | 0.61** | -0.18** | 0.40** | -0.14** |
| Achieving Style Dimensions | ||||
| Intensity | 0.24** | 0.18** | 0.29** | -0.11* |
| Assertiveness | 0.45** | 0.01 | 0.45** | -0.21** |
| Risk Tolerance | 0.57** | -0.18** | 0.35** | -0.05 |
| Adaptability | 0.52** | -0.34** | 0.11* | -0.05 |
| Decision-making | 0.22** | -0.41** | -0.18** | 0.08 |
REACH Profile Mapping to Fisher Temperament Dominant Systems
Mean style percentiles by dominant neurochemical expression
| Style | Dopamine | Serotonin | Testosterone | Estrogen/Oxytocin |
|---|---|---|---|---|
| Relating Style | 55.12 | 49.36 | 44.76 | 68.49 |
| Achieving Style | 70.73 | 36.63 | 64.92 | 36.08 |
| Predicted REACH Profile | Coaching | Advising | Driving | Counseling |
REACH Skill-based Characteristics × DiSC
DiSC does not measure skills or EI — limited convergent validity expected for RQ
| Skill-based Characteristic | Dominance | Influence | Steadiness | Conscientiousness |
|---|---|---|---|---|
| REACH Quotient (RQ) | 0.12 | -0.02 | -0.09 | -0.11 |
| Counseling Cluster | ||||
| Counseling Characteristics Cluster | 0.03 | 0.05 | -0.06 | -0.09 |
| Coaching Cluster | ||||
| Coaching Characteristics Cluster | 0.07 | 0.06 | -0.10 | -0.10 |
| Driving Cluster | ||||
| Driving Characteristics Cluster | 0.17* | -0.05 | -0.12 | -0.09 |
| Advising Cluster | ||||
| Advising Characteristics Cluster | 0.14* | -0.09 | -0.06 | -0.08 |
REACH Style-based Characteristics × DiSC
| Style-based Characteristic | Dominance | Influence | Steadiness | Conscientiousness |
|---|---|---|---|---|
| Relating Style | -0.22** | 0.23** | 0.03 | 0.02 |
| Relating Style Dimensions | ||||
| Affiliation | -0.04 | 0.17* | -0.02 | -0.07 |
| Consideration | -0.23** | 0.12 | 0.04 | 0.09 |
| Openness | -0.12 | 0.18* | 0.01 | -0.02 |
| Status Motivation | -0.22** | -0.05 | 0.17* | 0.13 |
| Self-protection | -0.19** | 0.17* | 0.05 | 0.04 |
| Achieving Style | 0.48** | 0.15* | -0.27** | -0.42** |
| Achieving Style Dimensions | ||||
| Intensity | 0.31** | -0.11 | -0.11 | -0.15* |
| Assertiveness | 0.52** | 0.24** | -0.37** | -0.48** |
| Risk Tolerance | 0.37** | 0.12 | -0.17* | -0.37** |
| Adaptability | 0.04 | 0.01 | 0.00 | -0.06 |
| Decision-making | -0.01 | 0.20** | -0.06 | -0.09 |
REACH Profile Style Percentiles by DiSC Dominant Type
Mean Relating Style and Achieving Style by DiSC classification
| Style | Dominance | Influence | Steadiness | Conscientiousness |
|---|---|---|---|---|
| Relating Style | 46.85 | 68.57 | 53.46 | 50.88 |
| Achieving Style | 56.77 | 47.59 | 39.16 | 30.93 |
REACH Style-based Characteristics × CliftonStrengths Domains
Broad domain-level convergent patterns
| Style-based Characteristic | Executing | Influencing | Relationship Building | Strategic Thinking |
|---|---|---|---|---|
| Relating Style | -0.20* | 0.28** | 0.15 | -0.17 |
| Relating Style Dimensions | ||||
| Affiliation | -0.22* | 0.29** | 0.06 | -0.06 |
| Consideration | -0.14 | 0.15 | 0.18 | -0.16 |
| Openness | -0.16 | 0.35** | 0.07 | -0.17 |
| Status Motivation | -0.05 | -0.10 | 0.39** | -0.28** |
| Self-protection | -0.24** | 0.03 | 0.14 | 0.07 |
| Achieving Style | -0.13 | 0.20* | -0.18 | 0.16 |
| Achieving Style Dimensions | ||||
| Intensity | 0.24** | -0.16 | -0.27** | 0.16 |
| Assertiveness | -0.09 | 0.33** | -0.18* | 0.05 |
| Risk Tolerance | -0.10 | 0.12 | -0.10 | 0.11 |
| Adaptability | -0.16 | 0.09 | -0.10 | 0.18 |
| Decision-making | -0.41** | 0.33** | 0.18 | -0.04 |
REACH Skill-based Characteristics × CliftonStrengths Domains
| Skill-based Characteristic | Executing | Influencing | Relationship Building | Strategic Thinking |
|---|---|---|---|---|
| REACH Quotient (RQ) | -0.10 | 0.23* | 0.02 | -0.10 |
| Counseling Cluster | ||||
| Counseling Characteristics Cluster | -0.16 | 0.17 | 0.29** | -0.28** |
| Assimilating Team Members | -0.18 | 0.08 | 0.25** | -0.16 |
| Cultivating Team Spirit | -0.06 | 0.20* | 0.20* | -0.29** |
| Identifying Personal Needs | -0.18 | 0.19* | 0.22* | -0.20* |
| Recognizing Others' Efforts | -0.05 | 0.04 | 0.19* | -0.19* |
| Coaching Cluster | ||||
| Coaching Characteristics Cluster | -0.16 | 0.15 | 0.17 | -0.13 |
| Driving Cluster | ||||
| Driving Characteristics Cluster | 0.05 | 0.21* | -0.22* | 0.03 |
| Advising Cluster | ||||
| Advising Characteristics Cluster | 0.00 | 0.09 | -0.19* | 0.13 |
Key Takeaways for Practitioners
REACH measures what it claims to measure
The REACH Quotient (RQ) demonstrates significant convergent validity with the Schutte Emotional Intelligence Test (r = .48**), confirming that REACH genuinely captures emotional intelligence constructs — not just personality traits. This separates it from tools like DiSC, which showed no significant EI correlation.
Neurochemical underpinning adds scientific depth
The Fisher Temperament Inventory study (n = 323) revealed that REACH styles map cleanly onto dominant neurochemical systems. This provides a biological basis for why style preferences are stable over time and why targeted coaching is needed to develop agility across profiles.
DiSC alignment confirms style measurement — but reveals gaps
REACH style factors strongly correlate with DiSC constructs (Achieving Style × Dominance: r = .48**), validating convergent measurement. However, DiSC shows no correlation with RQ — because DiSC does not measure skills or emotional intelligence. REACH captures both dimensions.
CliftonStrengths validates influence capacity
The significant positive correlation between RQ and the Influencing domain (r = .23*) is particularly meaningful — REACH Quotient was designed to measure capacity for exercising diverse styles of influence, and the CliftonStrengths data confirms this. Communication (r = .50**) and Woo (r = .52**) themes strongly validate the relational constructs.
Methodology & Source
This analysis is derived from the REACH LX Technical Report (Revised November 2025) by Drew Tatnell BPsych(Hons) MPsychOrg MAPS, originally authored by Dr Doug Waldo DBA SHRM-SCP CNC. Data includes over 33,000 participants from 12 countries collected between 2012–2025. All correlation coefficients are Pearson product-moment correlations with two-tailed significance tests. The REACH model is published and distributed by OrgDev Institute Pty Ltd trading as REACH LX.
Reference instruments: Schutte Self-Report Emotional Intelligence Test (Schutte et al., 1998); Fisher Temperament Inventory (Johnson-Vickberg & Christfort, 2017); DiSC Typology; CliftonStrengths (Gallup).
